Gibberellin production and phosphate solubilization by newly isolated strain of Acinetobacter calcoaceticus and its effect on plant growth.
Plant growth-promoting rhizobacteria with gibberellins (GA)-producing potential were isolated from soil and screened for plant growth promotion. A new strain, Acinetobacter calcoaceticus SE370, produced extracellular GA and also had phosphate solubilising potential. It produced 10 different gibberellins, including the bioactive GA(1), GA(3) and GA(4) which were at, respectively, 0.45, 6.2 and 2.8 ng/100 ml. The isolate solubilised tricalcium phosphate and lowered pH of the medium during the process. Culture filtrates of the organism after growth on broth promoted growth of cucumber, Chinese cabbage and crown daisy.
Kang
Sang-Mo
SM
Division of Plant Biosciences, College of Agriculture and Life Sciences, Kyungpook National University, Daegu, South Korea.
Joo
Gil-Jae
GJ
Hamayun
Muhammad
M
Na
Chae-In
CI
Shin
Dong-Hyun
DH
Kim
Hak Youn
HY
Hong
Jin-Kyu
JK
Lee
In-Jung
IJ
D016954:Acinetobacter calcoaceticus / Q000145:classification* / Q000502:physiology*; D018553:Cucumis sativus / Q000254:growth & development* / Q000382:microbiology*; D005875:Gibberellins / Q000096:biosynthesis*; D010710:Phosphates / Q000378:metabolism*; D012988:Soil Microbiology; D012995:Solubility; D013045:Species Specificity
D005875:Gibberellins; D010710:Phosphates